Speaker automatic welding equipment based on welding exhaust gas absorption treatment

Abstract

The present invention relates to the field of automatic welding, and is used to solve the problem that the absorption rate of welding waste gas is insufficient, which easily leads to waste gas escape or excessive welding waste gas emission. Specifically, it is a loudspeaker automatic welding equipment based on welding waste gas absorption and treatment. In the present invention, the waste gas generated by welding is sucked in through the air intake grilles on both sides of the welding station to prevent the waste gas generated by welding from drifting. Since the air intake grille and the generating position of the welding waste gas are close to each other, the absorption efficiency of the welding waste gas is improved. In the absorption process of the welding waste gas, the absorption work of the welding waste gas is intelligently regulated according to the concentration of the welding waste gas and the intake volume of the polluted waste gas, and the absorption effect can be guaranteed for waste gas of different generation amounts to prevent the diffusion of the welding waste gas. At the same time, through physical filtration and water absorption, the treatment amount of the waste gas is analyzed while the absorption is being carried out, and the filtering and absorption consumables in the waste gas absorption chamber are supervised according to the treatment amount of the waste gas to ensure the waste gas treatment effect.

Description

Technical Field

[0001] The invention relates to the field of automatic welding, in particular to loudspeaker automatic welding equipment based on welding waste gas absorption and treatment. Background Art

[0002] In addition to a large amount of smoke and dust, welding operations also contain a large amount of various harmful gases and gasified or atomized chemicals. Its main components are carbon monoxide, hydrocarbons, particles, carbon smoke and other harmful gases; if nitrogen is used, nitrogen oxides will also be produced. If not processed, it will fly in the air and can invade the liver, lungs, cardiovascular system and blood through the respiratory tract. These toxic substances are seriously devouring human health;

[0003] Automatic welding equipment has high working efficiency and fast welding speed, so a large amount of harmful gas will be enriched in the welding workbench area. At present, the automatic welding equipment in the existing technology still has shortcomings. In terms of the treatment of welding exhaust gas, most of the existing automatic welding equipment absorbs harmful gases through the gas purification means of the overall environment in the workshop, which causes the welding harmful gases to float in the air after the welding is completed, thereby causing the harmful gases to escape, increasing the difficulty of purifying the harmful gases. In addition, the purification process of welding exhaust gas in the existing technology is purified by a fixed working ventilation efficiency, lacking the ability to perform feedback adjustment according to the exhaust gas concentration and exhaust gas volume, and lacking supervision of the purification equipment itself, which affects the exhaust gas absorption and treatment effect;

[0004] In view of the above technical problems, this application proposes a solution. Summary of the invention

[0005] In the present invention, the exhaust gas generated by welding is sucked in through the air intake grilles on both sides of the welding station to prevent the exhaust gas generated by welding from drifting. Since the air intake grille is close to the generation position of the welding exhaust gas, the absorption efficiency of the welding exhaust gas is improved. In the absorption process of the welding exhaust gas, the absorption of the welding exhaust gas is intelligently regulated according to the concentration of the welding exhaust gas and the intake volume of the polluted exhaust gas, and the absorption effect can be guaranteed for exhaust gases of different generation amounts to prevent the diffusion of the welding exhaust gas. At the same time, the absorption rate of the welding exhaust gas is further improved through physical filtration and water absorption, and the exhaust gas treatment effect is guaranteed. The problem of insufficient absorption rate of the welding exhaust gas, which easily leads to exhaust gas escape or excessive emission of welding exhaust gas, is solved, and an automatic speaker welding equipment based on welding exhaust gas absorption treatment is proposed.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] The automatic speaker welding equipment based on welding waste gas absorption and treatment includes a base, a conveyor belt is installed on the upper surface of the base, the speaker material to be welded is placed on the conveyor belt, and is transported to the welding station by the conveyor belt, and a support column is fixedly installed on the upper surface of the base, and a movable frame that can move up and down as a whole is sleeved on the outer wall of the support column, and the movable frame includes a transverse sliding shaft and a longitudinal sliding shaft, and a welding head is fixedly installed below the movable frame, and the welding head is installed below the transverse sliding shaft, and is moved to any position in the plane through the transverse sliding shaft and the longitudinal sliding shaft;

[0008] A collecting chamber is fixedly installed on the upper surface of the base, and two groups of collecting chambers are distributed on both sides of the conveyor belt. An air intake grille is fixedly installed on the side of each group of collecting chambers facing the conveyor belt. The air intake grille is provided with multiple groups of holes, so that the gas enters the collecting chamber through the holes on the air intake grille. A guide plate is fixedly installed inside the collecting chamber. An absorption chamber is fixedly installed under the base, and the top of the absorption chamber is connected with the collecting chamber. An exhaust port is arranged at one end of the absorption chamber, and a negative pressure pump, a smoke filter and a water-washing absorption tank are arranged inside the absorption chamber.

[0009] As a preferred embodiment of the present invention, controllers are provided at both ends of the collection chamber, and the controllers are used to control the operation of the exhaust gas absorption control system, and the exhaust gas absorption control system includes a linkage control unit, an exhaust gas absorption self-checking unit, an exhaust gas purification management unit and an exhaust management unit;

[0010] The linkage control unit should perform signal control on the exhaust gas absorption according to the working status and working time of the welding station;

[0011] The exhaust gas absorption self-checking unit is used to monitor the absorption process of welding exhaust gas, and obtain the gas pollution degree and gas flow rate according to the monitoring results of the absorption process;

[0012] The exhaust gas purification management unit counts the amount of exhaust gas purification and determines the maintenance cycle of the absorption chamber according to the amount of exhaust gas purification;

[0013] The exhaust management unit monitors the exhaust process of the absorption chamber to ensure that the exhaust meets the standards.

[0014] As a preferred embodiment of the present invention, the linkage control unit obtains the working state of the welding head, and if the welding head is in a welding state, generates an exhaust gas absorption signal; if the welding head is not in a welding state, calculates the time difference between the last welding state time of the welding head and the current time; if the time difference is less than a preset difference, generates an exhaust gas absorption signal; if the time difference is not less than the preset difference, generates an absorption stop signal;

[0015] The linkage control unit sends the exhaust gas absorption signal and the absorption stop signal to the exhaust gas absorption self-checking unit. After the exhaust gas absorption self-checking unit obtains the exhaust gas absorption signal, it controls the negative pressure pump inside the absorption chamber to work. After the linkage control unit obtains the absorption stop signal, it controls the negative pressure pump inside the absorption chamber to stop working.

[0016] As a preferred embodiment of the present invention, the exhaust gas absorption self-test unit detects the inhaled gas in the collection chamber, and the types of detection include gas pollution degree and gas flow rate, wherein the exhaust gas absorption self-test unit performs the detection method as follows:

[0017] The exhaust gas absorption self-checking unit collects the particle content in the exhaust gas inside the collection chamber and records it as the particle amount. At least two groups of flow velocity sensors are arranged in the collection chamber along the axial direction. The exhaust gas absorption self-checking unit performs arithmetic averaging on the flow velocities collected by the multiple flow velocity sensors in the collection chamber, and records the arithmetic average result as the gas flow velocity. The exhaust gas absorption self-checking unit analyzes the gas flow velocity, the collection chamber volume and the intake grille area through a formula to generate a gas flow rate. The exhaust gas absorption self-checking unit analyzes the gas flow rate and the particle amount through a formula to generate a gas pollution degree.

[0018] The exhaust gas absorption self-checking unit sends the gas pollution degree and gas throughput to the exhaust gas purification management unit.

[0019] As a preferred embodiment of the present invention, the exhaust gas absorption self-inspection unit generates a wind pressure coverage rate X by analyzing the gas flow rate, gas throughput and particle amount through a formula. The exhaust gas absorption self-inspection unit compares the wind pressure coverage rate with a preset coverage threshold. If the wind pressure coverage rate is greater than the preset coverage threshold, a qualified wind pressure signal is generated. If the wind pressure coverage rate is less than the preset coverage threshold, an insufficient wind pressure signal is generated. After obtaining the insufficient wind pressure signal, the exhaust gas absorption self-inspection unit generates a power increase signal to the negative pressure pump in the absorption chamber to increase the operating power of the negative pressure pump.

[0020] As a preferred embodiment of the present invention, the exhaust gas purification management unit performs weighted calculation on the gas pollution degree and the gas throughput to obtain the exhaust gas purification amount. The exhaust gas purification management unit compares the exhaust gas purification amount with a preset threshold value. If the exhaust gas purification amount is greater than the corresponding threshold value, an absorption chamber maintenance signal is generated. If the exhaust gas purification amount is not greater than the corresponding threshold value, no response is made.

[0021] As a preferred embodiment of the present invention, the exhaust management unit detects the pollution degree of the gas discharged through the exhaust port through the sensor in the exhaust port, compares the detected gas pollution degree with the preset gas emission standard, and generates a purification abnormality signal if the detected gas pollution degree is greater than the preset gas emission standard, and generates a purification qualified signal if the detected gas pollution degree is not greater than the preset gas emission standard;

[0022] After the exhaust management unit generates a purification abnormality signal, it generates an early warning reminder, thereby reminding the management personnel to perform maintenance and repair on the absorption chamber.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] In the present invention, during the automatic welding process, air intake grilles are arranged on both sides of the welding station so that the exhaust gas generated by welding will be directly sucked into the air intake grille in the negative pressure environment to prevent the exhaust gas generated by welding from drifting. Since the air intake grille and the generating position of the welding exhaust gas are close to each other, the energy consumption during the absorption of the welding exhaust gas is reduced, and the absorption efficiency of the welding exhaust gas is improved. At the same time, the absorption rate of the welding exhaust gas is further improved through physical filtration and water absorption, thereby ensuring the exhaust gas treatment effect.

[0025] In the present invention, during the absorption process of welding waste gas, the concentration of welding waste gas is monitored, the absorption work of welding waste gas is quantitatively evaluated and analyzed according to the concentration of welding waste gas and the intake volume of polluted waste gas, and the absorption power of welding waste gas is intelligently regulated to ensure the absorption effect for waste gas of different production amounts and avoid the diffusion of welding waste gas.

[0026] In the present invention, when treating welding waste gas, the treatment volume of the waste gas is reorganized and quantitatively analyzed, and the filtering and absorption consumables in the waste gas absorption chamber are supervised according to the treatment volume of the waste gas, so that corresponding treatment can be carried out in time before the consumables fail, thereby ensuring the absorption effect of the absorption chamber and avoiding the problem of increased costs or insufficient absorption effect caused by fixed-frequency consumables management. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0028] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0029] Figure 2 It is a cross-sectional structural schematic diagram of the present invention;

[0030] Figure 3 is a system block diagram of the present invention;

[0031] Figure 4It is a system flow chart of the present invention.

[0032] In the figure: 1. base; 2. air inlet grille; 3. collecting chamber; 4. supporting column; 5. movable frame; 6. welding head; 7. conveyor belt; 8. absorption chamber; 9. exhaust port; 10. guide plate. DETAILED DESCRIPTION

[0033] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Example 1: Please refer to Figure 1 - Figure 4 As shown, the loudspeaker automatic welding equipment based on welding exhaust gas absorption treatment includes a base 1, a conveyor belt 7 is installed on the upper surface of the base 1, the loudspeaker material to be welded is placed on the conveyor belt 7, and is conveyed to the welding station by the conveyor belt 7, and a support column 4 is also fixedly installed on the upper surface of the base 1, and the outer wall of the support column 4 is sleeved with a movable frame 5 that can move up and down as a whole, and the movable frame 5 includes a transverse sliding shaft and a longitudinal sliding shaft, and a welding head 6 is fixedly installed below the movable frame 5, and the welding head 6 is installed below the transverse sliding shaft, and is moved to any position in the plane through the transverse sliding shaft and the longitudinal sliding shaft;

[0035] A collecting chamber 3 is fixedly installed on the upper surface of the base 1, and two groups of collecting chambers 3 are distributed on both sides of the conveyor belt 7. An air intake grille 2 is fixedly installed on the side of each group of collecting chambers 3 facing the conveyor belt 7. The air intake grille 2 is provided with multiple groups of holes, so that the gas enters the collecting chamber 3 through the holes on the air intake grille 2. A guide plate 10 is fixedly installed inside the collecting chamber 3. An absorption chamber 8 is fixedly installed below the base 1. The top of the absorption chamber 8 is connected to the collecting chamber 3. An exhaust port 9 is provided at one end of the absorption chamber 8. A negative pressure pump, a smoke filter and a water washing absorption tank are provided inside the absorption chamber 8.

[0036] Example 2: Please refer to Figure 1 - Figure 4 As shown, controllers are provided at both ends of the collection chamber 3, and the controllers are used to control the operation of the exhaust gas absorption control system. The exhaust gas absorption control system includes a linkage control unit, an exhaust gas absorption self-checking unit, an exhaust gas purification management unit and an exhaust management unit;

[0037] The linkage control unit obtains the working state of the welding head 6. If the welding head 6 is in the welding state, an exhaust gas absorption signal is generated. If the welding head 6 is not in the welding state, the time difference between the last welding state time of the welding head 6 and the current time is calculated. If the time difference is less than the preset difference, an exhaust gas absorption signal is generated. If the time difference is not less than the preset difference, an absorption stop signal is generated.

[0038] The linkage control unit sends the exhaust gas absorption signal and the absorption stop signal to the exhaust gas absorption self-checking unit. After the exhaust gas absorption self-checking unit obtains the exhaust gas absorption signal, it controls the negative pressure pump inside the absorption chamber 8 to work, and draws air in through the negative pressure pump. The air intake grille 2 faces the direction of the welding station on the conveyor belt, and the exhaust gas generated by welding enters the absorption chamber 8 through the air intake grille 2 and the collection chamber 3, and passes through the smoke filter and the water washing absorption tank inside the absorption chamber 8 once;

[0039] After the linkage control unit obtains the absorption stop signal, it controls the negative pressure pump inside the absorption chamber 8 to stop working;

[0040] The exhaust gas absorption self-checking unit detects the inhaled gas in the collection chamber 3, and the types detected include gas pollution degree and gas flow rate, wherein the exhaust gas absorption self-checking unit performs detection in the following manner: the exhaust gas absorption self-checking unit collects the particle content in the exhaust gas through the particle sensor inside the collection chamber 3, and records it as the particle amount P; the exhaust gas absorption self-checking unit obtains the velocity through the flow velocity sensor inside the collection chamber 3, and at least two groups of flow velocity sensors are arranged along the axial direction in the collection chamber 3; the exhaust gas absorption self-checking unit performs arithmetic averaging on the flow velocities collected by the multiple flow velocity sensors in the collection chamber 3, and records the arithmetic average result as the gas flow velocity V; the exhaust gas absorption self-checking unit generates the gas flow rate W through formula analysis, W=S*V, wherein S is a preset coefficient, and the value of S is positively correlated with the gap area of ​​the air intake grille 2 and the volume of the collection chamber 3; the exhaust gas absorption self-checking unit generates the gas pollution degree R through formula analysis, R=q*W*P, wherein q is a preset weight coefficient, and the value range of q is greater than 1;

[0041] The exhaust gas absorption self-check unit generates the wind pressure coverage rate X through formula analysis. , where the formula is a dimensionless calculation, y is a preset wind pressure coefficient, and the value range of y is 1.2 to 1.5. The exhaust gas absorption self-checking unit compares the wind pressure coverage rate with the preset coverage threshold. If the wind pressure coverage rate is greater than the preset coverage threshold, a wind pressure qualified signal is generated. If the wind pressure coverage rate is less than the preset coverage threshold, an insufficient wind pressure signal is generated. After obtaining the insufficient wind pressure signal, the exhaust gas absorption self-checking unit generates an early warning reminder and generates a power increase signal to the negative pressure pump in the absorption chamber 8, so that the negative pressure pump in the absorption chamber 8 increases the operating power by one gear;

[0042] The exhaust gas absorption self-checking unit sends the gas pollution degree R and the gas throughput W to the exhaust gas purification management unit;

[0043] The exhaust gas purification management unit performs weighted calculation on the gas pollution degree and gas throughput to obtain the exhaust gas purification amount J. , where T is the use time of the smoke filter and the water-washing absorption tank in the absorption chamber 8, a and b are preset weight coefficients, a>b>0, the exhaust gas purification management unit compares the exhaust gas purification amount with the preset threshold value, and if the exhaust gas purification amount is greater than the corresponding threshold value, an absorption chamber maintenance signal is generated, and if the exhaust gas purification amount is not greater than the corresponding threshold value, no response is made;

[0044] The exhaust management unit detects the pollution degree of the gas discharged through the exhaust port 9 through the sensor in the exhaust port 9, and compares the detected gas pollution degree with the preset gas emission standard. If the detected gas pollution degree is greater than the preset gas emission standard, a purification abnormality signal is generated; if the detected gas pollution degree is not greater than the preset gas emission standard, a purification qualified signal is generated;

[0045] After the exhaust management unit generates a purification abnormality signal, it generates an early warning reminder, thereby reminding the management personnel to perform maintenance and repair on the absorption chamber 8.

[0046] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. Loudspeaker automatic welding equipment based on welding exhaust gas absorption treatment, characterized in that: The invention comprises a base (1), a conveyor belt (7) is installed on the upper surface of the base (1), a speaker material to be welded is placed on the conveyor belt (7), and is transported to a welding station by the conveyor belt (7), a support column (4) is fixedly installed on the upper surface of the base (1), an outer wall of the support column (4) is sleeved with a movable frame (5) that can move up and down as a whole, the movable frame (5) comprises a transverse sliding shaft and a longitudinal sliding shaft, a welding head (6) is fixedly installed below the movable frame (5), the welding head (6) is installed below the transverse sliding shaft, and is moved to any position in a plane through the transverse sliding shaft and the longitudinal sliding shaft; A collecting chamber (3) is fixedly mounted on the upper surface of the base (1), and two groups of collecting chambers (3) are distributed on both sides of the conveyor belt (7). An air intake grille (2) is fixedly mounted on the side of each group of collecting chambers (3) facing the conveyor belt (7). The air intake grille (2) is provided with a plurality of groups of holes so that gas can enter the collecting chamber (3) through the holes on the air intake grille (2). A guide plate (10) is fixedly mounted inside the collecting chamber (3). An absorption chamber (8) is fixedly mounted below the base (1), and the top of the absorption chamber (8) is connected to the collecting chamber (3). An exhaust port (9) is arranged at one end of the absorption chamber (8). A negative pressure pump, a smoke filter and a water-washing absorption tank are arranged inside the absorption chamber (8); Controllers are provided at both ends of the collection chamber (3), and the controllers are used to control the operation of the exhaust gas absorption control system, and the exhaust gas absorption control system includes a linkage control unit, an exhaust gas absorption self-checking unit, an exhaust gas purification management unit and an exhaust gas management unit; The linkage control unit performs signal control on the exhaust gas absorption according to the working state and working time of the welding station; The exhaust gas absorption self-checking unit is used to monitor the absorption process of welding exhaust gas, and obtain the gas pollution degree and gas flow rate according to the monitoring results of the absorption process; The waste gas purification management unit counts the amount of waste gas purification, and determines the maintenance cycle of the absorption chamber (8) according to the amount of waste gas purification; The exhaust management unit monitors the exhaust process of the absorption chamber (8) to ensure that the exhaust meets the standards; The exhaust gas absorption self-test unit detects the sucked gas in the collection chamber (3), and the types of detection include the degree of gas pollution and the amount of gas passing through, wherein the exhaust gas absorption self-test unit performs the detection method as follows: The exhaust gas absorption self-checking unit collects the particle content in the exhaust gas inside the collection chamber (3) and records it as the particle amount P. At least two groups of flow rate sensors are arranged in the collection chamber (3) along the axial direction. The exhaust gas absorption self-checking unit performs arithmetic averaging on the flow rates collected by the multiple flow rate sensors in the collection chamber (3) and records the arithmetic average result as the gas flow rate V. The exhaust gas absorption self-checking unit analyzes the gas flow rate V, the volume of the collection chamber (3) and the area of ​​the air intake grille (2) through a formula to generate a gas flow rate W, W=S*V, wherein S is a preset coefficient, and the value of S is positively correlated with the gap area of ​​the air intake grille (2) and the volume of the collection chamber (3). The exhaust gas absorption self-checking unit generates a gas pollution degree R through a formula analysis, R=q*W*P, wherein q is a preset weight coefficient, and the value range of q is greater than 1; The exhaust gas absorption self-checking unit sends the gas pollution degree and gas throughput to the exhaust gas purification management unit; The exhaust gas absorption self-checking unit generates the wind pressure coverage rate X by analyzing the gas flow velocity, gas flow rate and particle amount through a formula. The formula is a dimensionless calculation, y is a preset wind pressure coefficient, and the value range of y is 1.2 to 1.

5. The exhaust gas absorption self-checking unit compares the wind pressure coverage rate with the preset coverage threshold. If the wind pressure coverage rate is greater than the preset coverage threshold, a wind pressure qualified signal is generated. If the wind pressure coverage rate is less than the preset coverage threshold, an insufficient wind pressure signal is generated. After obtaining the insufficient wind pressure signal, the exhaust gas absorption self-checking unit generates a power increase signal to the negative pressure pump in the absorption chamber (8) to increase the operating power of the negative pressure pump. The waste gas purification management unit performs weighted calculation on the gas pollution degree and the gas flow rate to obtain the waste gas purification amount J, J = (aR + bW) T, wherein T is the use time of the smoke filter and the water-washing absorption tank in the absorption chamber (8), a and b are preset weight coefficients, a>b>0, and the waste gas purification management unit compares the waste gas purification amount with a preset threshold value. If the waste gas purification amount is greater than the corresponding threshold value, an absorption chamber maintenance signal is generated. If the waste gas purification amount is not greater than the corresponding threshold value, no response is made.

2. The loudspeaker automatic welding equipment based on welding exhaust gas absorption treatment according to claim 1 is characterized in that: The linkage control unit obtains the working state of the welding head (6), generates an exhaust gas absorption signal if the welding head (6) is in a welding state, and calculates the time difference between the last welding state of the welding head (6) and the current time if the welding head (6) is not in a welding state, generates an exhaust gas absorption signal if the time difference is less than a preset difference, and generates an absorption stop signal if the time difference is not less than the preset difference; The linkage control unit sends the exhaust gas absorption signal and the absorption stop signal to the exhaust gas absorption self-checking unit. After the exhaust gas absorption self-checking unit obtains the exhaust gas absorption signal, it controls the negative pressure pump inside the absorption chamber (8) to work. After the linkage control unit obtains the absorption stop signal, it controls the negative pressure pump inside the absorption chamber (8) to stop working.

3. The loudspeaker automatic welding equipment based on welding exhaust gas absorption treatment according to claim 1 is characterized in that: The exhaust management unit detects the degree of gas pollution discharged through the exhaust port (9) through a sensor in the exhaust port (9), compares the detected degree of gas pollution with a preset gas emission standard, and generates a purification abnormality signal if the detected degree of gas pollution is greater than the preset gas emission standard, and generates a purification qualified signal if the detected degree of gas pollution is not greater than the preset gas emission standard; After the exhaust management unit generates a purification abnormality signal, it generates an early warning reminder, thereby reminding the management personnel to perform maintenance and repair on the absorption chamber (8).

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